Mobility models for ad-hoc networks

Nomadic model

The '+' simbol denotes the gravity center.
The "0" node is a target point, it is not animated.
Click with the mouse to move the entire grid toward this position.

public static Pos move_nomadic(int node) {
    Pos p=(Pos)loc.get(new Integer(node)); // real position
    Pos r=(Pos)ref.get(new Integer(node)); // theoretic position
    double d=p.distance(r);
    int xi=(int)(Math.random()*(d+10));
    int yi=(int)(Math.random()*(d+10));
    if (p.isLeft(r)) xi+=p.x; else xi=p.x-xi;
    if (p.isUp(r)) yi+=p.y; else yi=p.y-yi;
    return new Pos(xi,yi);
}

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Miguel Sanchez 1998